The Pavement Dynamic Cone Penetrometer (DCP) is a very robust instrument, designed for rapid in-situ evaluation of the strength of sub-grade and the bases for roads and runway pavements. Continuous measurements can be made down to a depth of 800 mm or, when an extension is fitted, to a depth of 1200 mm. Where pavement layers have different strengths, the boundaries can be identified and the thickness of the layers determined.

A typical test takes only a few minutes, so this instrument provides a very efficient method of obtaining information that would normally require test-pits. Correlations have been established between measurements with DCP and California Bearing Ratio (CBR) so that the results can be interpreted and compared with CBR specifications for pavement design. The agreement is generally good over most of the range but differences are apparent at low values of CBR, especially for fine-grained materials.

It incorporates an 8kg weight dropping through a height of 575mm and a 60° cone having a diameter of 20mm. It is supplied complete with assembly tools and weighs about 20kg.

Specification

• Top and bottom rod
• Handle
• Hammer
• Scale
• Cone 60°
• Anvil
• Bottom rod

Features and Benefits

• A simple and robust instrument for rapid in-situ measurement of the structural properties of road pavements.
• Provides a fast and efficient method of obtaining information.
• For continuous measurements up to a depth of 800mm and 1200mm with the extension rod.
• Portable and can be accommodated in a carrying case.

Supplied as Standard

• Top and bottom rod
• Handle
• Hammer
• Scale
• Cone 60°
• Anvil